rm -rf 88791
bin/mysqld --initialize-insecure --basedir=$PWD --datadir=$PWD/88791 
bin/mysqld --no-defaults --log-bin --server-id=1 --binlog_format=ROW --basedir=$PWD --datadir=$PWD/88791 --core-file --socket=/tmp/mysql_ushastry.sock --port=3307 --log-error=$PWD/88791/log.err 2>&1 &

-- Session 1
-- binlog_format IS ROW
flush binary logs;
create database gctest;
use gctest;
CREATE TABLE `t` (   `id` int(11) DEFAULT NULL,   `j` json DEFAULT NULL,   `gc` json GENERATED ALWAYS AS (json_array(`j`)) VIRTUAL);
insert into t (id,j) values (1,'"abc"');
update t set j = '"def"' where id = 1;

mysql> select * from t;
+------+-------+---------+
| id   | j     | gc      |
+------+-------+---------+
|    1 | "def" | ["def"] |
+------+-------+---------+
1 row in set (0.00 sec)


-- Session 2

[umshastr@hod03]/export/umesh/server/binaries/GABuilds/mysql-5.7.20: bin/mysqlbinlog 88791/hod03-bin.000002 --base64-output=DECODE-ROWS -v
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at 4
#171208  6:13:25 server id 1  end_log_pos 123 CRC32 0xc6812531  Start: binlog v 4, server v 5.7.20-log created 171208  6:13:25
# Warning: this binlog is either in use or was not closed properly.
# at 123
#171208  6:13:25 server id 1  end_log_pos 154 CRC32 0x46f45eb1  Previous-GTIDs
# [empty]
# at 154
#171208  6:13:25 server id 1  end_log_pos 219 CRC32 0x2568032d  Anonymous_GTID  last_committed=0        sequence_number=1       rbr_only=no
SET @@SESSION.GTID_NEXT= 'ANONYMOUS'/*!*/;
# at 219
#171208  6:13:25 server id 1  end_log_pos 319 CRC32 0x37ad5e57  Query   thread_id=3     exec_time=0     error_code=0
SET TIMESTAMP=1512710005/*!*/;
SET @@session.pseudo_thread_id=3/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
SET @@session.sql_mode=1436549152/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=8/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
create database gctest
/*!*/;
# at 319
#171208  6:13:46 server id 1  end_log_pos 384 CRC32 0xc67eb55b  Anonymous_GTID  last_committed=1        sequence_number=2       rbr_only=no
SET @@SESSION.GTID_NEXT= 'ANONYMOUS'/*!*/;
# at 384
#171208  6:13:46 server id 1  end_log_pos 593 CRC32 0xa04cfa4b  Query   thread_id=3     exec_time=0     error_code=0
use `gctest`/*!*/;
SET TIMESTAMP=1512710026/*!*/;
CREATE TABLE `t` (   `id` int(11) DEFAULT NULL,   `j` json DEFAULT NULL,   `gc` json GENERATED ALWAYS AS (json_array(`j`)) VIRTUAL)
/*!*/;
# at 593
#171208  6:13:46 server id 1  end_log_pos 658 CRC32 0x2f31808c  Anonymous_GTID  last_committed=2        sequence_number=3       rbr_only=yes
/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;
SET @@SESSION.GTID_NEXT= 'ANONYMOUS'/*!*/;
# at 658
#171208  6:13:46 server id 1  end_log_pos 732 CRC32 0x48e7abf2  Query   thread_id=3     exec_time=0     error_code=0
SET TIMESTAMP=1512710026/*!*/;
BEGIN
/*!*/;
# at 732
#171208  6:13:46 server id 1  end_log_pos 782 CRC32 0x2d4303e4  Table_map: `gctest`.`t` mapped to number 219
# at 782
#171208  6:13:46 server id 1  end_log_pos 847 CRC32 0xffdfedaa  Write_rows: table id 219 flags: STMT_END_F
### INSERT INTO `gctest`.`t`
### SET
###   @1=1
###   @2='\x0c\x03abc'
###   @3='\x02\x01\x00\x0b\x00\x0c\x07\x00\x03abc'
# at 847
#171208  6:13:46 server id 1  end_log_pos 878 CRC32 0xaa1dfc8d  Xid = 16
COMMIT/*!*/;
# at 878
#171208  6:13:47 server id 1  end_log_pos 943 CRC32 0xd4a52295  Anonymous_GTID  last_committed=3        sequence_number=4       rbr_only=yes
/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;
SET @@SESSION.GTID_NEXT= 'ANONYMOUS'/*!*/;
# at 943
#171208  6:13:47 server id 1  end_log_pos 1017 CRC32 0xd5ad5bb8         Query   thread_id=3     exec_time=0     error_code=0
SET TIMESTAMP=1512710027/*!*/;
BEGIN
/*!*/;
# at 1017
#171208  6:13:47 server id 1  end_log_pos 1067 CRC32 0x6fc058f8         Table_map: `gctest`.`t` mapped to number 219
# at 1067
#171208  6:13:47 server id 1  end_log_pos 1163 CRC32 0xad12c6e0         Update_rows: table id 219 flags: STMT_END_F
### UPDATE `gctest`.`t`
### WHERE
###   @1=1
###   @2='\x0c\x03abc'
###   @3='\x02\x01\x00\x0b\x00\x0c\x07\x00\x03def'
### SET
###   @1=1
###   @2='\x0c\x03def'
###   @3='\x02\x01\x00\x0b\x00\x0c\x07\x00\x03def'
# at 1163
#171208  6:13:47 server id 1  end_log_pos 1194 CRC32 0xae2e7602         Xid = 17
COMMIT/*!*/;
SET @@SESSION.GTID_NEXT= 'AUTOMATIC' /* added by mysqlbinlog */ /*!*/;
DELIMITER ;
# End of log file
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;


-- Session 1

mysql> drop database gctest;
Query OK, 1 row affected (0.00 sec)


-- Session 2

[umshastr@hod03]/export/umesh/server/binaries/GABuilds/mysql-5.7.20: bin/mysqlbinlog --stop-position=1194 88791/hod03-bin.000002 | bin/mysql -uroot -S /tmp/mysql_ushastry.sock

mysql> use gctest
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select * from t;
+------+-------+---------+
| id   | j     | gc      |
+------+-------+---------+
|    1 | "def" | ["def"] |
+------+-------+---------+
1 row in set (0.00 sec)